1. Renal Division, Peking University First Hospital; Institute of Nephrology, Peking University; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of CKD Prevention and Treatment, Ministry of Education of China, Beijing, China
2. Geriatrics Department, Peking University Third Hospital, Beijing, China
3. Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing, China
4. Peking-Tsinghua Center for Life Sciences, Beijing, China